:root {
    --color-primary: #0f4c5c;
    --color-primary-dark: #072e38;
    --color-accent: #e36414;
    --color-accent-soft: #ffb877;
    --color-surface: #fdf3df;
    --color-surface-alt: #ffffff;
    --color-ink: #10222b;
    --color-text: #1b2a33;
    --rgb-primary: 15,76,92;
    --rgb-accent: 227,100,20;
    --radius-sm: 0px;
    --radius-md: 2px;
    --radius-lg: 3px;
    --radius-xl: 4px;
    --shadow-sm: 2px 2px 0 0 rgba(15, 76, 92, 0.85), 0 0 0 1px rgba(15, 76, 92, 0.10);
    --shadow-md: 4px 4px 0 0 #0f4c5c, 0 0 0 1px rgba(15, 76, 92, 0.16);
    --shadow-lg: 8px 8px 0 0 #e36414, 0 0 0 1px rgba(16, 34, 43, 0.10);
    --space-section: 2rem;
    --space-card: 1rem;
    --space-gap: 0.75rem;
    --transition: 0.15s cubic-bezier(0.2, 0, 0, 1);
    --heading-weight: 800;
    --body-line-height: 1.7;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background-color: var(--color-surface-alt); caret-color: var(--color-accent); accent-color: var(--color-primary); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); color: var(--color-primary-dark); text-shadow: 1px 1px 0 rgba(227, 100, 20, 0.14); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); background-color: var(--color-surface-alt); }
section:nth-of-type(even), .section:nth-of-type(even) { background-color: var(--color-surface); }
.card, [class*="card"] { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: var(--space-card); transition: var(--transition); background-color: var(--color-surface-alt); border: 1px solid rgba(var(--rgb-primary), .22); }
.card:hover, [class*="card"]:hover { box-shadow: var(--shadow-lg); border-color: rgba(var(--rgb-accent), .55); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background-color: var(--color-primary); color: var(--color-surface-alt); box-shadow: var(--shadow-sm); border-color: var(--color-primary-dark); }
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover { background-color: var(--color-accent); box-shadow: var(--shadow-md); border-color: var(--color-primary-dark); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-decoration-color: rgba(var(--rgb-accent), .6); }

/* ========== Section Layout Variants ========== */

/* news: grid-4 */
/* 四列紧凑网格 */
                .news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 0.8); }

/* features: grid-2 */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: calc(var(--space-gap) * 1.5); }

/* hero: centered */
.hero-content { text-align: center; max-width: 800px; margin: 0 auto; }

/* testimonials: grid-3 */
.testimonial-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }

/* partners: grid-6 */
.partner-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: var(--space-gap); align-items: center; }

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
                .faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: 2rem; }

/* stats: big-number */
/* 大数字居中 */
                .stats-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }
                .stats-grid .stat-value { font-size: 3rem; color: var(--color-accent); text-shadow: 3px 3px 0 rgba(15, 76, 92, 0.16); }

/* cta: split */
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; }

/* Page Layout: wide */
/* 超宽 */
            .page-main { max-width: 1400px; margin: 0 auto; }

/* 条件性装饰 */
a:not([class]):hover { color: var(--color-accent); }
.card { border: 1px solid rgba(var(--rgb-primary), .22); }

/* Responsive */
@media (max-width: 1024px) {
    .news-grid { grid-template-columns: repeat(2, 1fr) !important; }
    .feature-list { grid-template-columns: repeat(2, 1fr) !important; }
    .partner-grid { grid-template-columns: repeat(3, 1fr) !important; }
    .stats-grid { grid-template-columns: repeat(2, 1fr) !important; }
    .hero-inner { grid-template-columns: 1fr !important; }
}
@media (max-width: 640px) {
    :root { --space-section: 2rem; --space-card: 1rem; --space-gap: 0.75rem; --radius-lg: 2px; --shadow-md: 3px 3px 0 0 #0f4c5c, 0 0 0 1px rgba(15, 76, 92, 0.16); }
    .news-grid { grid-template-columns: 1fr !important; }
    .feature-list { grid-template-columns: 1fr !important; }
    .faq-list { grid-template-columns: 1fr !important; }
    .testimonial-list { column-count: 1 !important; }
    .partner-grid { grid-template-columns: repeat(2, 1fr) !important; }
    .stats-grid { grid-template-columns: repeat(2, 1fr) !important; }
    .cta-inner { grid-template-columns: 1fr !important; }
}